811 / 1542
0
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1
1.2
0
2
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20
Dose [relative units]
Depth [cm]
Longitudinal - Spread Out Bragg Peak
TARGET
OAR
•
SOBP
→
Superposition of
multiple mono-energetic pencil
beams
•
Homogeneity and conformation
of dose to target is achieved
through mathematical
optimization of
weights
of
individual pencil beams